Sorry the identation went wrong, fixed here:
>
>
> @staticmethod
> def initialize():
> tAttr = OpenMaya.MFnTypedAttribute()
> cAttr = OpenMaya.MFnCompoundAttribute()
>
> VertexSnap.aDriverMesh = tAttr.create('driverMesh', 'driverMesh',
> OpenMaya.MFnData.kMesh)
>
> VertexSnap.aDriverIndices = tAttr.create('driverIndices',
> 'driverIndices', OpenMaya.MFnData.kIntArray)
>
> VertexSnap.aDrivers = cAttr.create('drivers', 'drivers')
> cAttr.setArray(True)
> cAttr.addChild(VertexSnap.aDriverMesh)
> cAttr.addChild(VertexSnap.aDriverIndices)
> VertexSnap.addAttribute(VertexSnap.aDrivers)
>
> outputGeom = OpenMayaMPx.cvar.MPxGeometryFilter_outputGeom
> VertexSnap.attributeAffects(VertexSnap.aDriverMesh, outputGeom)
> VertexSnap.attributeAffects(VertexSnap.aDriverIndices, outputGeom)
>
>
> def deform(self, data, geoIter, localToWorldMatrix, geoIndex):
>
> hDrivers = data.inputArrayValue(VertexSnap.aDrivers)
> numDrivers = hDrivers.elementCount()
> for driverIdx in range(numDrivers):
> hDrivers.jumpToElement(driverIdx)
> hDriver = hDrivers.inputValue()
> oDriverMesh = hDriver.child(VertexSnap.aDriverMesh).asMesh()
>
> if oDriverMesh.isNull():
> # No driver mesh
> return
>
> fnDriverMesh = OpenMaya.MFnMesh(oDriverMesh)
> print fnDriverMesh.name()
> # I got this: # RuntimeError: (kFailure): Object does not exist //
>
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